DE69941839D1 - System und verfahren zur überwachung einer verzweigungsleitung - Google Patents
System und verfahren zur überwachung einer verzweigungsleitungInfo
- Publication number
- DE69941839D1 DE69941839D1 DE69941839T DE69941839T DE69941839D1 DE 69941839 D1 DE69941839 D1 DE 69941839D1 DE 69941839 T DE69941839 T DE 69941839T DE 69941839 T DE69941839 T DE 69941839T DE 69941839 D1 DE69941839 D1 DE 69941839D1
- Authority
- DE
- Germany
- Prior art keywords
- monitoring
- branching line
- branching
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
- G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
- G01M11/3136—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR for testing of multiple fibers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4027798 | 1998-02-23 | ||
PCT/JP1999/000510 WO1999042803A1 (fr) | 1998-02-23 | 1999-02-05 | Systeme et procede pour le controle de ligne de derivation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69941839D1 true DE69941839D1 (de) | 2010-02-04 |
Family
ID=12576139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69941839T Expired - Lifetime DE69941839D1 (de) | 1998-02-23 | 1999-02-05 | System und verfahren zur überwachung einer verzweigungsleitung |
Country Status (8)
Country | Link |
---|---|
US (1) | US6771358B1 (de) |
EP (1) | EP1059518B1 (de) |
CN (1) | CN1174566C (de) |
AU (1) | AU741723B2 (de) |
BR (1) | BR9908176A (de) |
CA (1) | CA2321915C (de) |
DE (1) | DE69941839D1 (de) |
WO (1) | WO1999042803A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100325687B1 (ko) * | 1999-12-21 | 2002-02-25 | 윤덕용 | 주입된 비간섭성 광에 파장 잠김된 페브리-페롯 레이저다이오드를 이용한 파장분할 다중방식 광통신용 광원 |
US6606148B2 (en) * | 2001-04-23 | 2003-08-12 | Systems And Processes Engineering Corp. | Method and system for measuring optical scattering characteristics |
GB0126166D0 (en) * | 2001-10-31 | 2002-01-02 | Cit Alcatel | Apparatus and method for monitoring an optical transmission line |
KR100955129B1 (ko) | 2003-05-30 | 2010-04-28 | 정보통신연구진흥원 | 비간섭성 광대역 광원을 이용한 파장분할다중방식 수동형 광 네트워크 구현 방법 |
TWI255618B (en) * | 2005-01-26 | 2006-05-21 | Ind Tech Res Inst | Apparatus and method of optical fiber condition monitoring in optical networks |
KR100698766B1 (ko) * | 2005-09-07 | 2007-03-23 | 한국과학기술원 | 파장분할 다중방식 수동형 광 가입자 망 시스템에 사용되는장애 위치 감시 장치 및 이를 구비한 파장분할 다중방식수동형 광 가입자 망 시스템 |
KR100785436B1 (ko) | 2005-09-20 | 2007-12-13 | 한국과학기술원 | 방송 서비스와 통신 서비스를 융합한 파장분할 다중방식수동형 광 가입자망 |
EP1952561B1 (de) * | 2005-10-24 | 2018-04-04 | Exfo Inc. | Verfahren und vorrichtung zur identifikation mehrerer fasern unter verwendung eines otdr |
US8571410B2 (en) * | 2006-10-11 | 2013-10-29 | Novera Optics, Inc. | Mutual wavelength locking in WDM-PONS |
CN102067483A (zh) * | 2008-04-21 | 2011-05-18 | 奥普林克通信公司 | 光纤网络监控 |
US8594496B2 (en) * | 2009-11-13 | 2013-11-26 | Futurewei Technologies, Inc. | Tunable coherent optical time division reflectometry |
IL206723A0 (en) * | 2010-06-30 | 2010-12-30 | Eci Telecom Ltd | Technology for fault allocation in passive optical networks (pon) |
WO2014090295A1 (en) * | 2012-12-12 | 2014-06-19 | Telefonaktiebolaget L M Ericsson (Publ) | Communication network element and method of mitigating an optical jamming attack against an optical communication signal |
CN104009804A (zh) * | 2013-02-22 | 2014-08-27 | 中兴通讯股份有限公司 | 光收发装置及方法 |
CN107852236A (zh) * | 2015-06-16 | 2018-03-27 | 昇宰股份公司 | 光线路监控*** |
ES2948115T3 (es) | 2016-11-11 | 2023-08-31 | Carrier Corp | Detección basada en fibra óptica de alta sensibilidad |
CN106788751A (zh) * | 2016-11-30 | 2017-05-31 | 武汉光迅科技股份有限公司 | 一种应用多波长双向泵浦高阶双向拉曼放大光纤通信传输***及方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2721211B2 (ja) | 1988-11-24 | 1998-03-04 | 古河電気工業株式会社 | 分岐光線路の損失分布測定装置 |
GB8828408D0 (en) * | 1988-12-06 | 1989-01-05 | British Telecomm | Loss detector |
JP3039995B2 (ja) * | 1990-12-20 | 2000-05-08 | 株式会社フジクラ | 光ファイバ通信線路の特性検出方法 |
GB9202564D0 (en) * | 1992-02-07 | 1992-03-25 | Marconi Gec Ltd | Optical signal transmission network |
JPH06117961A (ja) | 1992-10-05 | 1994-04-28 | Furukawa Electric Co Ltd:The | 光線路監視方法 |
US5383015A (en) * | 1992-12-22 | 1995-01-17 | At&T Corp. | Optical time domain reflectometry measurements on a multi-branch optical network using multiwavelength pass filters |
JPH06350530A (ja) * | 1993-06-02 | 1994-12-22 | Furukawa Electric Co Ltd:The | 光通信システム |
JP3355259B2 (ja) * | 1995-03-31 | 2002-12-09 | 安藤電気株式会社 | 光反射減衰量を測定するotdr |
GB9515498D0 (en) * | 1995-07-28 | 1995-09-27 | Bicc Plc | Optical fibre system |
US5703978A (en) * | 1995-10-04 | 1997-12-30 | Lucent Technologies Inc. | Temperature insensitive long-period fiber grating devices |
JPH09135206A (ja) * | 1995-11-10 | 1997-05-20 | Hitachi Cable Ltd | 光通信システム |
JP3224344B2 (ja) * | 1996-06-10 | 2001-10-29 | 安藤電気株式会社 | 多分岐光線路試験装置 |
US5757487A (en) * | 1997-01-30 | 1998-05-26 | The United States Of America As Represented By The Secretary Of The Navy | Methods and apparatus for distributed optical fiber sensing of strain or multiple parameters |
DE69800438T2 (de) * | 1998-02-16 | 2001-04-26 | Hewlett Packard Co | Lokalisierung von Fehlern in faseroptischen Systemen |
JP3527844B2 (ja) * | 1998-03-11 | 2004-05-17 | 安藤電気株式会社 | 多分岐光線路試験方法および装置 |
-
1999
- 1999-02-05 EP EP99901951A patent/EP1059518B1/de not_active Expired - Lifetime
- 1999-02-05 CN CNB998032603A patent/CN1174566C/zh not_active Expired - Fee Related
- 1999-02-05 BR BR9908176-8A patent/BR9908176A/pt not_active Application Discontinuation
- 1999-02-05 AU AU21869/99A patent/AU741723B2/en not_active Ceased
- 1999-02-05 WO PCT/JP1999/000510 patent/WO1999042803A1/ja active IP Right Grant
- 1999-02-05 CA CA002321915A patent/CA2321915C/en not_active Expired - Fee Related
- 1999-02-05 DE DE69941839T patent/DE69941839D1/de not_active Expired - Lifetime
-
2000
- 2000-08-14 US US09/637,571 patent/US6771358B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU2186999A (en) | 1999-09-06 |
AU741723B2 (en) | 2001-12-06 |
CN1292085A (zh) | 2001-04-18 |
CA2321915C (en) | 2007-04-17 |
EP1059518B1 (de) | 2009-12-23 |
CA2321915A1 (en) | 1999-08-26 |
CN1174566C (zh) | 2004-11-03 |
EP1059518A1 (de) | 2000-12-13 |
US6771358B1 (en) | 2004-08-03 |
BR9908176A (pt) | 2000-11-07 |
WO1999042803A1 (fr) | 1999-08-26 |
EP1059518A4 (de) | 2006-05-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |